Credit: Trae Patton/NBC; Kevin Mazur/

Forget earning America's vote in this week's America's Got Talent semifinals: competitors like Fighting Gravity and champion ballroom dancers Anna Kaczmarski and Patryk Ploszay have already earned the A-list vote.

"Last month Lil Wayne put us on his Web site and Kayne [West] put us on his blog," Fighting Gravity's Travis Dalrymple tells

As the contestant pool narrows, Dalrymple and his fellow performance artists Danny Kang and Gregg Curtin, are feeling the pressure to pull out all the stops.

"We're kind of overwhelmed right now -- it's an emotional roller coaster. We are under a tremendous amount of pressure to put the next routine together in a week when we usually have about three or four weeks in between shows," Kang says.

Also feeling the heat -- literally! -- are tween ballroom dancers Kaczmarski and Ploszay.

"[Judge] Piers [Morgan] gave us advice -- he told us to use fire and firecrackers," Kaczmarksi, 12, tells Us.

While getting advice from the judges is nice, perhaps the pair's biggest surprise came courtesy of one of their peers.

"Justin Bieber added me on Facebook!" Ploszay gushes. "A lot of fans have emailed us -- it's pretty cool."

The 10 semifinalists of America's Got Talent will compete for a spot in the show's final round and a chance at the $1 million prize Tuesday at 9 p.m./ET on NBC.

-- By Allison Corneau for For more Channel Surfing, click here.